KR101757211B1 - Water treatment apparatus combined precipitation and filtration function - Google Patents

Abstract

The present invention can provide a high concentration MLSS of the aeration tank by increasing the removal efficiency of the suspended effluent through sedimentation and filtration in combination with the sedimentation and filtration functions. Therefore, it is an object of the present invention to provide a sedimentation and filtration apparatus capable of securing a large number of microorganisms, To a water treatment apparatus in which filtration functions are performed in parallel.
The water treatment apparatus in which the precipitation and filtration functions according to the present invention are performed is a water treatment apparatus for treating wastewater and water, and the precipitation and filtration tank 100 is formed in the form of a sphere or a polyhedron so that the sludge contained in the wastewater A water-phase supra-type filter medium 110 having voids; A filter material detachment prevention net 115 for receiving the water-phase supra-type filter material 110 and preventing the filter material from coming out; An attachment sludge backing device 130 installed at a lower portion of the filter material separation prevention network 115 in which the water-bearing topsheet 110 is accommodated and for removing sludge adhered to the water-bearing topsheet 110 through air stripping; And an overflow ware unit 140 installed on the upper part of the sedimentation and filtration tank 100 for transferring the flow of the treated water having passed through the water phase heterogeneous filter media 110 to the next process through the treated water transfer pipe 125 )Wow; A backwash water transfer device 120 for collecting backwash water containing sludge generated in a backwash process for desorbing the sludge adhered to the water phase heterogeneous filtration material 110 through the attached sludge backwash device 130 and discharging it to the outside; It is possible to shorten the water treatment process so as to secure a high quality water in a simple and stable manner and it is not necessary to provide a separate filter at the rear end so that the civil engineering structure and facilities can be reduced and the initial investment cost and normal operation cost can be reduced .

Description

TECHNICAL FIELD [0001] The present invention relates to a water treatment apparatus and a water treatment apparatus,

The present invention relates to a multipurpose type water treatment apparatus for sedimentation tank, which is performed by adding filtration and automatic backwashing function to a sedimentation tank function of a general concept in a wastewater treatment facility, and more particularly to a sedimentation and filtration tank (MLSS) (Mixed Liquor Suspended Solid) in the aeration tank to increase the efficiency of water treatment by securing the number of microorganisms in the aeration tank of the previous stage, ≪ / RTI >

In the modern society, industrialization and urbanization are accelerating day by day, and the environmental pollution that is generated thereby becomes a big problem to be solved in the modern society. Especially, wastewater such as sewage, wastewater, and sewage discharged from households or factories of environment pollutants contains harmful components such as nitrogen, phosphorus, and organic substances, and therefore, a facility for purifying and discharging it must be essentially applied.

Water treatment technology for purifying wastewater has been developed in recent years. Water treatment technology is used in many fields such as wastewater, high concentration organic wastewater, various industrial wastewater, non-point pollution abatement facilities, heavy water, and reusable water.

Conventionally, activated sludge method and modified method have been widely used as water treatment techniques. In this activated sludge method and modified method, first and second settling tanks are essential processes and occupy many processes. However, this method has the disadvantage that the floatation of the sludge due to the floatation and expansion of the sludge depending on the flow rate of the wastewater during the winter season and the wastewater may pollute the river water system, There is a problem in that it is accompanied by a burden of management and an administrative burden due to an increase in facilities.

Among the various water treatment methods that solve these problems, there is a MBR (Membrane) series water treatment method in which a high concentration MLSS (Mixed Liquor Suspended Solid) of an aeration tank is formed and maintained and a filtration function is combined. However, the water treatment method of the MBR series not only has a high initial investment cost, but also is difficult to maintain and manage at a normal time, requires careful attention, and has a problem in that additional facility investment costs are continuously incurred by periodically replacing it with the concept of consumables.

In recent years, as a tendency to keep the MLSS condition of the aeration tank at a high concentration in the wastewater treatment method, it is necessary to form MLSS of the aeration tank more highly in the case of the high concentration polluted wastewater. Therefore, there is a growing demand for a water treatment technology that can simplify, improve the treatment efficiency and economical efficiency as a facility capable of forming a high concentration MLSS condition of the precipitation and filtration functions and the aeration tank.

Korean Registered Patent No. 10-1097144 (registered on December 15, 2011) Korean Registered Patent No. 10-1097139 (registered on December 15, 2011)

The present invention has been made in order to solve the problems occurring in the conventional water treatment technology, and it is an object of the present invention to reduce the initial facility investment cost and to provide a clear and clean treatment in which floating matters are filtered, The present invention is to provide a water treatment apparatus capable of forming a high concentration MLSS of an aeration tank and maintaining an efficient and stable operation and being compatible with the overall operation process of the water treatment facility.

In order to accomplish the above object, the water treatment apparatus according to the present invention is a water treatment apparatus for water treatment of wastewater through a precipitation and filtration tank in which precipitation and filtration functions are concurrently performed. The precipitation and filtration tank is provided with a spherical or multi- A water-phase supra-type filter medium having a cavity to allow the sludge contained in the wastewater to be adhered; A filter medium detachment prevention net for receiving the water-phase supra-type filter medium and preventing the water medium from being separated from the filter medium; An adhesion sludge backing unit installed at a lower portion of the filter material separation preventing network accommodating the water-based topsheet and removing the sludge adhered to the water-phase topsheet through air stripping; An overflow warehouse installed in the upper part of the sedimentation and filtration tank to uniformly flow the treated water having passed through the water phase supersaturated material and transfer it to the next process through the treated water transfer pipe; And a backwash water transfer device for collecting backwash water containing sludge generated in backwashing process for desorbing the sludge adhered to the water-phase topsheet through the attached sludge backwash device and discharging it to the outside.

The water-phase supra-type filter medium is composed of a fibrous filter material of PP material having a porosity of 0.9 to 0.95, a specific gravity of 0.82 to 0.95 and a diameter of 3 to 10 mm or a polyhedral filter material of natural wood, And is accommodated in the escape prevention network.

In addition, the filter material separation preventing network is composed of a grid-like net at the upper and lower portions, a plurality of filter media having a side and a side separated by a separating plate and having a size of 1 m to 2 m in width and a length, And a partition wall is formed at the side end and upper and lower portions of the partition wall. The interior of the partition wall for partitioning the filter media is provided with a water-based upper layer type filter medium Are uniformly distributed and accommodated.

The attached sludge backwashing device includes a plurality of circular perforations formed at predetermined intervals. The installed sludge backwashing device is installed to spray air in an upward direction to remove sludge adhering to the surface of the water- An automatic electric valve is provided at the end of the pipe to periodically open and close the electric valve to clean the inside of the pipe.

The overflow ware is composed of a lattice type overflow ware which has a total area divided by 2 to 20 equal parts or more depending on the capacity of the settling and filtration tank. The overflow ware has a continuous V-shaped groove, It is preferable that the distance from the discharge part is shallower as the distance is shallower, and the flow of treatment water is made uniform.

The reverse water washing conveying apparatus includes a reverse oily water collecting trough for collecting backwash water including sludge generated during a backwash process and a reverse osmosis water collecting trough for pumping backwater collected in the reverse oven water collecting trough and discharging the reverse oven water to the outside through a reverse osmosis water conveying pipe A water transfer pump, and a reverse water discharge automatic drain valve installed on the reverse water transfer pipe.

The backwash water transfer pump and the reverse water discharge valve provided in the attached sludge backwash device and the backwash water transfer device are driven when the water level of the sedimentation and filtration tank is detected from the water level sensor installed in the set period or the settling and filtration tank, So that the process is performed.

The backwash water transfer pump and the backwater discharge valve provided in the backwater transfer device operate in conjunction with the attached sludge backwash device and operate prior to the driving of the adhesion sludge backwash device, After completion, it is preferable that the driving is stopped and the backwash water is not allowed to flow over the overflow ware during the backwash process.

A sludge collecting scraper collecting sludge at the center of the sediment and filtration tank is disposed at the center of the sediment and filtration tank, And a sludge collector for drawing and conveying the sludge to the sludge concentration tank is formed. A sludge collecting driving speed reducer for driving the sludge collecting scraper is installed at the center of the sedimentation and filtration tank.

On the other hand, a sludge collecting port is formed at the upper part of one side of the longitudinal precipitation and filtration tank, and a sludge collecting port is formed at the lower part for collecting sludge to collect and draw the sludge concentration tank. The sludge lifting chain is connected to the drive shaft through a plurality of rollers in such a manner as to surround the sediment and the inside of the filtration tank. The sludge lifting chain includes a chain plate And the sludge settling on the bottom of the filtration tank is transferred to the sludge collecting port by the chain plate as the drive shaft is driven.

The water treatment apparatus according to the present invention performs purification and wastewater treatment while simultaneously performing sedimentation and filtration functions through a sedimentation and filtration tank constituted by one apparatus, thereby simplifying the water treatment process without providing a separate filter at the rear stage, It is possible to secure water quality and to provide a high concentration MLSS formation of the aeration tank, which is a process prior to the settling tank, so that the wastewater can be treated more efficiently.

In addition, the present invention is convenient for operation by automatically controlling the sedimentation and filtration tank to perform water treatment, and it is possible to reduce the power consumption and maintenance of the downstream filter, and to induce a high concentration of microorganisms, And a pressurized water tank are omitted, so that it is possible to install even a small site compared with the existing facility site, thereby reducing the investment cost of the facility.

1 is a schematic view of a sedimentation and filtration tank, which is a water treatment apparatus in which sedimentation and filtration functions are performed in accordance with the present invention,
2 is a top view of a settling and filtration tank according to the invention,
FIG. 3 is a partial horizontal flat cross-sectional view of the precipitation and filtration tank according to the present invention,
FIG. 4 is a view showing an example of the shape of the water-
5 shows an example of the filter material separation preventing net according to the present invention,
FIG. 6 is a structural view of an attached sludge back-
FIG. 7 is a conceptual view of installing the overflow ware device according to the present invention,
8 is a configuration diagram of a rectangular precipitation and filtration tank according to an embodiment of the present invention,
9 is a side cross-sectional view of a rectangular settling and filtration tank according to an embodiment of the present invention,
FIG. 10 is a photograph showing the actual application of the sedimentation and filtration tank according to the present invention in the field.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The water treatment apparatus according to the present invention is provided with a single sedimentation and filtration tank in which the sedimentation and filtration functions are concurrently carried out so that the sedimentation and filtration functions can be performed at the same time. Such a sedimentation and filtration tank may be circular, rectangular, square And the like.

FIG. 2 is a top plan view of a sedimentation and filtration tank, and FIG. 3 is a top plan view of a sedimentation and filtration tank backwashing apparatus.

As shown in FIGS. 1 to 3, the upper part of the center of the sedimentation and filtration tank 100 according to the present invention is formed with a rectifying column 151 through which water to be purified water flows from the outside, And the concentrated sludge having a high specific gravity contained in the water filling the filtration tank 100 is settled downward. A sludge collecting scraper 152 for collecting the concentrated sludge precipitated in the center is formed at the bottom of the sediment and filtration tank 100. The sludge collecting scraper 152 is installed at the upper part of the rectifying column 151 And is driven by the driving speed reducer 150 for collecting the sludge, collecting the concentrated sludge settling on the floor while rotating and collecting the collected sludge at the center. A sludge collecting port 153 is formed at the center of the sludge collecting scraper 152. The concentrated sludge collected in the sludge collecting port 153 is drawn or conveyed to the sludge concentration tank by the sludge drawing pump .

On the other hand, the upper part of the sedimentation and filtration tank 100 is provided with a water-phase supra-type filter medium 110 having a cavity formed therein for attaching floating matters contained in the wastewater, and a water- An attachment sludge backing unit 130 installed at a lower portion of the filter medium separation prevention network 115 to remove the sludge adhered to the water top portion type filter medium 110 through air stripping, And an overflow ware unit 140 installed at an upper portion of the protection network 115 to uniformly transfer the flow of the treated water having passed through the water phase superhetery 110 to the next process through the treatment water transfer pipe.

The upper side of the sedimentation and filtration tank 100 collects backwash water containing sludge which is desorbed from the water phase heterogeneous filter media 110 by air stripping of the attached sludge backwashing device 130 and transfers it to the outside, A reverse osmosis water collecting trough 122 for collecting backwash water and collecting reverse osmosis water collected in the reverse osmosis water collecting trough 122 is connected to a reverse osmosis conveying pipe And a water level sensor 262 for conveying the water to the outside through the water level sensor.

In the sedimentation and filtration tank 100 having the above-described structure, the sludge contained in the water flowing through the rectification column 151 is precipitated and is supplied to the sludge collecting scraper 152 driven by the sludge collecting drive speed reducer 150 The sludge is collected by the sludge collecting unit 153 and discharged to the outside. The upper water of the incoming water is filtered by the sludge such as float or narrow water through the water-phase topsheet 110 housed in the filter material removal prevention net 115, And then discharged to the pipe 125.

On the other hand, the sludge adhered to the water-phase supra-type filter medium 110 is separated from the filter material 110 through the air stripping of the backwashing device 130 and is collected in the reverse-wash water collection trough 122 together with the reverse water- The backwash point at which the backwashing apparatus 130 is driven may be a normalized time or a backwash time per day or the like. The water level sensor 262 installed in the sedimentation and filtration tank 100 due to the rise of the water level due to the setting time of the filter media 110 or the clogging of the filter media 110 due to suspended matters). When the automatic backwashing is performed according to the above conditions, the backwash water transfer pump 121 is operated while the continuous operation is started. After about ten seconds, the air stripping of the backwashing device 130 takes 10 to 60 seconds The amount to be discharged is determined and determined). During the backwashing period, the backwash water is discharged to the outside through the reverse osmosis water transfer pipe, so that no overflow occurs in the effluent water tank through the overflow ware device 140.

Hereinafter, the submerged floating media 110, the filter material separation prevention network 115, the attached sludge backwasher 130 and the overflow ware device 140 provided in the sedimentation and filtration tank 100 will be described in more detail.

4 (a) is a perspective view of a water-based topsheet according to an embodiment of the present invention. FIG. 4 (a) is a polypropylene (PP) Fig. 4 (b) shows an example of a filter medium in the shape of a cube or a regular tetrahedron made of a natural wood material such as a plain wood or a cork tree.

In the embodiment of the present invention, the filter material 100 is made of a PP material or a natural wood material. In order to efficiently adhere the sludge, the fibrous material of the PP material is formed to have a porosity of 0.9 to 0.95, The specific gravity is formed to be 0.82 to 0.95, and the standard has a diameter of 3 mm to 10 mm. The water medium material 110 of the spherical body having the above configuration or the regular material 110 of the regular surface material made of the natural wood material can be formed into a plurality of unit spherical bodies or cubic bodies in accordance with the characteristics of the inflow water (wastewater, water) Or a mixture of various standards.

The sludge adhered to the filter material 110 is separated by air stripping through the attached sludge backwashing device 130 and discharged to the sludge concentration tank or the flow tank as reverse detergent. The common problem of the conventional filtration concept apparatus is that the backwashing and backwashing in the apparatus are often insufficient. In the present invention, however, A small amount of backwash water is generated due to the installation position and the water level selection characteristic, and it is possible to reduce the generation of backwash water by more than 10 times compared to the amount of backwash water generated by the conventional general filtration concept apparatuses (filter cloth, fibrous filter).

5 illustrates an example of a filter material separation prevention net according to an embodiment of the present invention.

As shown in FIG. 5, the filter material removal prevention network 115 according to the present invention is a device for receiving the filter material 110 inside to prevent it from being separated. The upper and lower portions of the filter material separation preventing network 115 are formed in a grid-like net. The upper cover 110 is formed with an access cover 116 which can be opened or closed so that the filter material 110 can be charged or inspected. The upper and lower nets are divided in a vertical direction at a distance of 1 to 2 m in the horizontal direction and in the lower vertical direction through the separation diaphragm and the separation prevention net to divide the plurality of filter media into a uniform distribution of the filter media 110 .

The filter material 110 is filled in the filter material separation prevention network 115 in which the plurality of filter media are partitioned to 50 to 70% of the volume of the filter material. The charged filter material 110 is adhered to the adhered sludge back- The sludge such as the lung biofilm is desorbed and the mutual positional movement between the filter media 110 is smoothly performed.

6 shows a structure of an attached sludge backwashing apparatus according to an embodiment of the present invention.

As shown in FIG. 6, the attached sludge backwashing device 130 according to the present invention is a device for desorbing sludge attached to the filter material 110 through air stripping. In the embodiment of the present invention, the attached sludge back-flushing apparatus 130 is formed so as to spray air in an upward direction by forming circular apertures of 2 to 4 mm at intervals of 20 to 40 cm in 50 to 100 A stainless pipes according to the processing scale and capacity, An automatic valve is installed at the end of the pipe in the downward direction so that the pipe can be periodically cleaned automatically.

When the sludge is attached to the filter material 110, the attached sludge back-flushing device 130 having the above-described structure can achieve a desorption effect of 99% or more easily through a short time of air stripping supplied from a blower. The number of times of desorption can be automatically operated 1 to 6 times per day as needed. In the case of a highly viscous wastewater, the number of times of operation can be increased. In the case of a low viscosity wastewater, the number of times of operation can be reduced. In addition, an automatic discharge valve may be installed at the end of the backwashing pipe 130 to prevent clogging of the piping, thereby facilitating the removal of foreign matter. In the embodiment of the present invention, the attached sludge back-flushing device 130 is installed in a structure in which a plurality of 'C' pipes are arranged as shown in FIG.

FIG. 7 is a conceptual view of installing the overflow ware device according to the embodiment of the present invention.

7, the overflow ware unit 140 according to the present invention is installed on the upper part of the sedimentation and filtration tank 100 to uniformly flow the treated water having passed through the filter media 110, And is transferred to the next process through the process water transfer pipe. Generally, since the larger the volume of the water to be treated and the larger the surface area of the water surface are, the more concentrated flow may occur when the water is moved to a subsequent process. So that the movement of the process water can be performed evenly.

The overflow ware unit 140 is made up of a plurality of overflow weirs dividing the entire area into a lattice shape of 2 to 20 equal parts or more depending on the capacity. The part located farthest from the final discharge part is relatively shallow and is close to the final discharge part So that the whole process water flow can be made smoothly.

The sedimentation and filtration tank 100 having the above-described structure simultaneously performs the precipitation and filtration functions, and the concentrated sludge contained in the incoming water is drawn and conveyed to the sludge concentration tank through the lower sludge collection port 153, The sludge attached to the filter media 110 is separated through the backwashing device 130 and discharged to the sludge concentration tank or the flow tank as reverse osmosis water. .

The sedimentation and filtration tank 100 according to the present invention may be modified and applied in various forms depending on the processing capacity and installation scale.

FIG. 8 is a schematic view of a longitudinal sedimentation and filtration tank according to another embodiment of the present invention, and FIG. 9 is a side sectional view of a longitudinal sedimentation and filtration tank.

The sedimentation and filtration tank 100 shown in Figs. 8 and 9 is a large-scale rectangular precipitation and filtration tank having a large water treatment capacity. In the sedimentation and filtration tank 100, A filter medium 115 for receiving the filtering medium 110 and an attachment sludge backing device 130 for removing the sludge adhered to the filtering medium 110 through air stripping, And an overflow ware unit 140 installed between the overflow ware partition 264. According to the designed capacity, a reverse water transfer device 120 is installed at the center, left and right of the upper part. The reverse water transfer device 120 includes a reverse osmosis water collection trough 122 for collecting reverse osmosis water, And a reverse water discharge valve 124 for discharging the reverse water collected in the wash water collection trough 122 to the outside through a reverse water transfer pipe 123. On the other hand, the water purified through the filter material 110 passes through the overflow ware unit 140, and then is transferred to the treated water transfer pipe 125.

A sludge collector 260 for collecting concentrated sludge is formed on the bottom of the filtration tank 100. The sludge collecting port 260 collects sludge from the sludge collecting port 260, The concentrated sludge collected in the sludge collecting port (260) is drawn and conveyed to the external sludge concentration tank through the sludge drawing pump (261).

In the sedimentation and filtration tank 100, a water level sensor 262 is installed. When the water level of the sedimentation and filtration tank 100 exceeds the reference water level due to clogging of filter media, an automatic backwash process is performed, So that the water level can be adjusted. At this time, the backwater discharge pipe 124 to which the backwash water is transferred is provided with an automatic backwash water discharge valve 124, and the timing and amount of the backwash water discharge can be adjusted by adjusting the backwash discharge valve 124.

The sludge collecting driving speed reducer 150 is connected to the driving shaft 251 through a belt so as to rotate the driving shaft 251 to rotate the sludge collecting driving speed reducer 150. [ . A sludge lifting chain 252 is connected to the drive shaft 251. The sludge lifting chain 252 is connected to the sludge lifting chain 252 through a plurality of rollers to surround the sedimentation and filtration tank 100, And is rotated inside the precipitation and filtration tank 100. That is, the sludge lifting chain 252 is operated between the rectifying column 263 and the overflow ware partition 264 and between the overflow ware partition 264 and the structure 265. The sludge lifting chain 252 is also provided with a chain plate 253 which is used to move the sludge lifting chain 252 to the bottom of the filtration tank 100, 100 so that the sediment and the concentrated sludge settling to the bottom of the filtration tank 100 are scraped off and transferred to the sludge collecting port 260. [

In the sedimentation and filtration tank 100 having the above-described structure, the supernatant of the water flowing through the rectification column 263 is filtered through the filter material 110 and then passed through the overflow ware unit 140 to the treated water transfer pipe 125 And discharged to the next process (discharge tank).

The filter material, the filter material separation prevention net, the backwasher principle, and the overwear concept in the round / square precipitation and filtration tank described above are also applied in the longitudinal precipitation and filtration tank.

FIG. 10 shows an example of a site photograph where a sedimentation and filtration tank according to an embodiment of the present invention is practically installed. In the present invention, the final effluent suspension is efficiently supplied through a sedimentation and filtration tank 100, And by providing a high concentration of MLSS in the aeration tank, the number of microorganisms can be secured and the efficiency of the water treatment can be increased.

 As described above, the precipitation and filtration tank according to the present invention can be suitably changed according to the treatment capacity, the installation scale, and the like, and the present invention is not limited to the above-mentioned embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Precipitation and filtration tank 110:
115: Filter material release prevention net 116: Outlet cover room
120: reverse osmosis conveying device 121: reverse osmosis conveying pump
122: Collection of stationary water Gutter 123: Station transferring water
124: Reverse bleed drain valve 125: Treated water transfer pipe
130: backwash device 140: overflow ware device
150: Driving speed reducer for collecting sludge 151:
152: Scraper for collecting sludge 153: Sludge collecting port
250: Sludge collecting drive decelerator 251: Drive shaft
252: sludge lifting chain 253: chain plate
260: Sludge collecting port 261: Sludge drawing pump
262: Water level sensor 263:
264: overflow ware partition 265: structure

Claims (10)

A water-phase upper type filter medium 110 having a spherical or polygonal shape and having a cavity for adhering sludge contained in the wastewater; A filter material detachment prevention net 115 for receiving the water-phase supra-type filter material 110 and preventing the filter material from coming out; An attachment sludge backing device 130 installed at a lower portion of the filter material removal prevention network 115 accommodating the water-bearing topsheet 110 and desorbing the sludge adhered to the water-bearing topsheet 110 through air stripping; An overflow ware unit 140 installed on the upper part of the filtration tank 100 for transferring the flow of the treated water evenly through the water phase superhetery 110 to the next process through the treated water transfer pipe 125, ; A backwash water transfer device 120 for collecting backwash water containing sludge generated in a backwash process for desorbing the sludge adhered to the water phase heterogeneous filtration material 110 through the attached sludge backwash device 130 and discharging it to the outside; And a filtering and filtering function through the filtration tank 100. The water treatment apparatus includes:
The reverse water washing transfer device 120 includes a reverse osmosis water collecting trough 122 for collecting backwash water including sludge generated during a backwash process and a reverse osmosis water collecting trough 122 for pumping reverse osmosis water collected in the reverse oven water collecting trough 122, And a reverse water discharge valve (124) installed in the reverse water discharge pipe (123) to open and close the reverse water discharge pipe (123)
The backwatershed transfer pump 121 and the backwater discharge valve 124 are operated in conjunction with the attached sludge backwash device 130 and operate prior to the air stripping of the attached sludge backwash device 130, After the air stripping operation of the device (130) is completed, the driving is stopped to prevent the backwash water from swirling through the overflow ware device (140) during backwashing process.
The method according to claim 1,
The water-based topological filter medium 110 is a spherical fibrous filter material made of polypropylene (PP) having a porosity of 0.9 to 0.95, a specific gravity of 0.82 to 0.95 and a diameter of 3 mm to 10 mm, or a natural wood material filter material And the same or a plurality of standards are mixed to be accommodated in the filter material detachment prevention net 115.
The method according to claim 1,
The filter material detachment prevention network 115
The upper and lower portions are formed of a grid-like net and the side surfaces are divided by the partitioning plates to form a plurality of filter media having a size of 1 m to 2 m in width and a height of 100 m in the filter media. And an outflow network is formed on upper and lower sides and side surfaces thereof,
Wherein the water medium removing material (110) is uniformly distributed and accommodated in the interior of the filter material separation prevention network (115) partitioned by the filter material in a ratio of 50 to 70% of the total volume.
The method according to claim 1,
The attached sludge back-
And a sludge adhered to the surface of the water-phase supra-type filter medium 110 located at the upper part through air stripping is removed, Wherein a motorized valve is provided at an end of the pipe to periodically open and close the motorized valve to clean the inside of the pipe.
The method according to claim 1,
The overflow ware device (140)
The overflow weir has a continuous V-shaped groove, and the bottom of the bottom of the filtration tank and the bottom of the bottom of the filtration tank 100 is divided into two, Wherein the water is formed so as to be shallower and closer as the distance from the final discharge portion of the water discharging portion becomes shorter, so that the flow of treated water can be uniform.
delete The method according to claim 1,
The backwash water transfer pump 121 and the reverse water discharge valve 124 provided in the attached sludge backwashing device 130 and the reverse osmosis water conveyance device 120 are connected to the water level sensor installed in the set period or in the settling and filtration tank 100, And when the water level of the sedimentation and filtration tank (100) is detected to be increased, the backwashing process is performed.
delete The method according to claim 1,
The sedimentation and filtration tank 100 is formed in a circular or rectangular shape, and a rectification column 151 through which water flows from the outside is formed in the center upper part,
A sludge collecting scraper 152 for collecting the sludge to be precipitated at the center of the sediment and filtration tank 100 at the center and a sludge collecting sludge collecting sludge collecting sludge collected by the sludge collecting scraper 152, (153)
And a sludge collecting driving speed reducer (150) for driving a sludge collecting scraper (152) is installed at the center of the sedimentation and filtration tank (100).
A water-phase upper type filter medium 110 having a spherical or polygonal shape and having a cavity for adhering sludge contained in the wastewater; A filter material detachment prevention net 115 for receiving the water-phase supra-type filter material 110 and preventing the filter material from coming out; An attachment sludge backing device 130 installed at a lower portion of the filter material removal prevention network 115 accommodating the water-bearing topsheet 110 and desorbing the sludge adhered to the water-bearing topsheet 110 through air stripping; An overflow ware unit 140 installed on the upper part of the filtration tank 100 for transferring the flow of the treated water evenly through the water phase superhetery 110 to the next process through the treated water transfer pipe 125, ; A backwash water transfer device 120 for collecting backwash water containing sludge generated in a backwash process for desorbing the sludge adhered to the water phase heterogeneous filtration material 110 through the attached sludge backwash device 130 and discharging it to the outside; And a filtering and filtering function through the filtration tank 100. The water treatment apparatus includes:
The sedimentation and filtration tank 100 has a rectangular shape, and a sludge collector 260 for collecting sludge to be settled and discharging the sludge to the outside is installed at a lower portion of the rectifying column 263, Lt; / RTI &
A sludge collecting driving speed reducer 250 connected to the driving shaft 251 through a belt is installed on the sedimentation and filtration tank 100. A sludge lifting chain 252 is connected to the driving shaft 251 through a plurality of rollers And is operatively connected between the rectifying column 263 and the overflow ware partition 264 or between the overflow ware partition 264 and the structure 265 so as to surround the sediment and filtration tank 100, The chain plate 253 is driven to drive the sludge settling on the bottom of the filtration tank 100 to the sludge collecting opening 260 by driving the drive shaft 251 Characterized by a water treatment device.

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